CUDA Support for ClangIR

Client: Bruno Cardoso Lopes, Meta <bruno.cardoso@gmail.com>

The Clang C++ compiler is currently getting support for a new SSA-based high-level IR representation, offering extra frontend knowledge to the compiler for better analysis and optimizations. This new ClangIR is implemented on top of MLIR and is currently in heavy development. It is mainly focused on CPU support (ARM64, x86_64) but still lacks GPU code generation support. Recently, OpenCL was added to the set of C/C++ compiler extensions supported by ClangIR, but many extensions (HLSL, CUDA, etc.) are still missing. In this project, you will add CUDA support to ClangIR, enabling GPU support for highly thought-after application workloads such as AI and computational science.